Question

triangle ABC~ Triangle DEF, BC=4cm, EF= 5cm and area of Triangle DEF= 100cm.square. find the area of Triangle ABC​

Answer 1

Answer:

the ratio of areas is equal to the ratio of their sides. X/100=4/5

X= 80 cm . square

Answer 2

Answer:

Given,

triangle ABC~ Triangle DEF,BC=4cm, EF= 5cm and area of Triangle DEF= 100cm

here, BC²/EF² = ar∆ABC/ar∆DEF

4²/5² = ar∆ABC/100

16/25 =ar∆ABC/100

ar∆ABC= 100×25/16

ar∆ABC= 156.25cm²